Pixel array and display device

ABSTRACT

A pixel array includes a plurality of sub-pixels, which include first to third sub-pixels. The first and third sub-pixels are alternately arranged along a row direction and form first pixel rows. The first and third sub-pixels, which are in a same column, in the first pixel rows are alternately arranged, and the second sub-pixels are arranged side by side along the row direction and form second pixel rows. Lines sequentially connecting centers of two of the first sub-pixels and two of the third sub-pixels, which are arranged in an array, together form a first virtual quadrilateral, and one of the second sub-pixels is in each first virtual quadrilateral. A straight line in the row direction or in a column direction, which passes through a center of each sub-pixel of at least one of the plurality of sub-pixels, divides the sub-pixel into two parts having areas different from each other.

CROSS REFERENCE TO RELATED APPLICATIONS

This is a Continuation of U.S. patent application Ser. No. 17/850,172,filed Jun. 27, 2022, which is a Continuation of U.S. patent applicationSer. No. 17/439,861, filed Sep. 16, 2021, which is a National PhaseApplication filed under 35 U.S.C. 371 as a national stage ofPCT/CN2020/118991 filed on Sep. 29, 2020, which is an applicationclaiming the priority of PCT/CN2020/114619, filed on Sep. 10, 2020, thecontent of each of which is incorporated herein by reference in itsentirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technology, andin particular to a pixel array and a display device.

BACKGROUND

An organic light emitting diode (OLED) display device is one of the hotspots in the research field of current flat panel display devices, andhas the advantages of low energy consumption, low production cost,self-luminescence, wide viewing angle, fast response speed, and the likeas compared with a liquid crystal display device. At present, in a fieldof flat panel display such as a mobile phone, a tablet computer, adigital camera or the like, the OLED display device has begun to replacea traditional liquid crystal display (LCD).

A structure of the OLED display device mainly includes: a substrate andpixels arranged in a matrix on the substrate. In general, in each of thepixels, an organic light emitting device is formed at a position of acorresponding pixel on an array substrate, by using an organic materialthrough a high-precision metal mask and an evaporation coating filmforming technology.

SUMMARY

Some embodiments of the present disclosure provide a pixel array and adisplay device.

In a first aspect, embodiments of the present disclosure provide a pixelarray, including a plurality of sub-pixels, which include firstsub-pixels, second sub-pixels, and third sub-pixels; the firstsub-pixels and the third sub-pixels are alternately arranged along a rowdirection and form a plurality of first pixel rows, the first sub-pixelsand the third sub-pixels, which are in a same column, in the pluralityof first pixel rows are alternately arranged, and the second sub-pixelsare arranged side by side along the row direction and form a pluralityof second pixel rows; lines sequentially connecting centers of two ofthe first sub-pixels and two of the third sub-pixels, which are arrangedin an array, together form a first virtual quadrilateral, and one of thesecond sub-pixels is in each first virtual quadrilateral; wherein

-   -   at least a portion of interior angles of the first virtual        quadrilateral is not equal to 90°; and    -   a first straight line in the row direction or a second straight        line in a column direction, each of the first straight line and        the second straight line passing through a center of each        sub-pixel of at least one sub-pixel of the plurality of        sub-pixels, divides the sub-pixel into two parts having areas        different from each other.

In an embodiment, a ratio of the areas of the two parts having areasdifferent from each other ranges from 2:8 to 8:2 and is not equal to1:1.

In an embodiment, a minimum distance from the intersection point of theextension lines of the two sides of the at least one vertex angle of theat least one sub-pixel of the first sub-pixels, the second sub-pixelsand the third sub-pixels to a boundary of the at least one sub-pixel isdifferent from a minimum distance from an intersection point ofextension lines of two sides of another vertex angle of the at least onesub-pixel to the boundary of the at least one sub-pixel.

In an embodiment, the shape of the first sub-pixels includes thepolygon, and corners of each first sub-pixel include a first corner anda second corner opposite to each other and a third corner and a fourthcorner opposite to each other; the second corner, the third corner andthe fourth corner have a substantially same shape, and a distance froman intersection point of extension lines of two sides of the firstcorner of a first sub-pixel to a center of the first sub-pixel isgreater than a distance from an intersection point of extension lines oftwo sides of the second corner to the center of the first sub-pixel.

In an embodiment, the shape of the third sub-pixels includes thepolygon, and corners of each third sub-pixel include a first corner anda second corner opposite to each other and a third corner and a fourthcorner opposite to each other; the second corner, the third corner andthe fourth corner have a substantially same shape, and a distance froman intersection point of extension lines of two sides of the firstcorner of a third sub-pixel to a center of the third sub-pixel isgreater than a distance from an intersection point of extension lines oftwo sides of the second corner of the third sub-pixel to the center ofthe third sub-pixel.

In an embodiment, the shape of the second sub-pixels includes thepolygon, and corners of each second sub-pixel include a first corner anda second corner opposite to each other and a third corner and a fourthcorner opposite to each other; the second corner, the third corner andthe fourth corner have a substantially same shape, and a distance froman intersection point of extension lines of two sides of the firstcorner of a second sub-pixel to a center of the second sub-pixel isgreater than a distance from an intersection point of extension lines oftwo sides of the second corner of the second sub-pixel to the center ofthe second sub-pixel.

In an embodiment, a ratio of a distance between an intersection point ofextension lines of two sides of the first corner of a first sub-pixeland a vertex of the first corner of the first sub-pixel to a distancebetween the vertex of the first corner of the first sub-pixel and avertex of the second corner opposite to the first corner ranges from ⅕to ½, and the vertex of the first corner of the first sub-pixel is apoint, which has a minimum distance from an intersection point ofextension lines of two sides of a corresponding vertex angle, at aboundary of the first sub-pixel.

In an embodiment, the first corner is circularly chamfered orrectilinearly chamfered.

In an embodiment, virtual vertex angles formed by intersections ofextension lines of two sides of vertex angles corresponding to thesecond corner, the third corner and the fourth corner, respectively, aresubstantially equal to each other.

In an embodiment, the virtual vertex angles formed by intersections ofextension lines of two sides of vertex angles corresponding to thesecond corner, the third corner and the fourth corner, respectively,range from about 80° to about 100°.

In an embodiment, an area surrounded by extension lines of two sides ofa vertex angle of the first corner and a contour of a boundary of thefirst corner is a first hollowed-out area, and an area surrounded byextension lines of two sides of a vertex angle of the second corner anda contour of a boundary of the second corner is a second hollowed-outarea, and the first hollowed-out area is greater than the secondhollowed-out area in area.

In an embodiment, minimum distances from a center of the secondsub-pixel in each first virtual quadrilateral to boundaries of lightemitting areas of two first sub-pixels directly adjacent to the secondsub-pixel are equal to each other.

In an embodiment, in the sub-pixels corresponding to the first virtualquadrilateral, two first sub-pixels are symmetric with respect to a lineconnecting the centers of two third sub-pixels, and the two thirdsub-pixels are symmetric with respect to a line connecting the centersof the two first sub-pixels.

In an embodiment, at least one of the interior angles of the firstvirtual quadrilateral ranges from 70° to 110°.

In an embodiment, a pair of opposite interior angles of the firstvirtual quadrilateral includes two interior angles each of which is 90°,and another pair of opposite interior angles of the first virtualquadrilateral includes one interior angle greater than 90° and the otherinterior angle less than 90°.

In an embodiment, a pair of opposite interior angles of the firstvirtual quadrilateral includes two interior angles equal to each other,and another pair of opposite interior angles of the first virtualquadrilateral includes two interior angles, one of which is equal to90°.

In an embodiment, all of the interior angles of the first virtualquadrilateral are not equal to 90°, and some of the interior angles ofthe first virtual quadrilateral are equal to each other.

In an embodiment, the first virtual quadrilateral includes a virtualparallelogram or a virtual trapezoid.

In an embodiment, four first virtual quadrilaterals arranged in an arrayform a second virtual polygon, the first sub-pixels and the thirdsub-pixels are at vertex angles or sides of the second virtual polygon,and are alternately distributed at the sides or the vertex angles of thesecond virtual polygon in a clockwise direction.

In an embodiment, the second virtual polygon includes a rectangle.

In an embodiment, in the second virtual polygon, centers of the thirdsub-pixels in a same row are substantially on a straight line parallelto the row direction, and/or centers of the third sub-pixels in a samecolumn are substantially on a straight line parallel to a columndirection.

In an embodiment, in the second virtual polygon, centers of the secondsub-pixels in a same row are substantially on a straight line parallelto the row direction, and/or centers of the second sub-pixels in a samecolumn are substantially on a straight line parallel to a columndirection.

In an embodiment, for a first sub-pixel and a third sub-pixel adjacentto each other in each first pixel row, an extension line of a lineconnecting end points farthest from respective centers thereof on afirst side in a column direction intersects an extension line of a lineconnecting end points farthest from the respective centers thereof on asecond side opposite to the first side, with an angle less than 30°therebetween.

In an embodiment, for a first sub-pixel and a third sub-pixel adjacentto each other in a same column, an extension line of a line connectingend points farthest from respective centers thereof on a first side inthe row direction intersects an extension line of a line connecting endpoints farthest from the respective centers thereof on a second sideopposite to the first side, with an angle less than 30° therebetween.

In an embodiment, for a first sub-pixel and a third sub-pixel adjacentto each other in a same row, at least one corner of the first sub-pixelis opposite to at least one corner of the third sub-pixel, and anintersection point of extension lines of two sides of the at least onecorner of the first sub-pixel and an intersection point of extensionlines of two sides of the at least one corner of the third sub-pixel areon a straight line parallel to the row direction; and/or for a firstsub-pixel and a third sub-pixel adjacent to each other in a same column,at least one corner of the first sub-pixel is opposite to at least onecorner of the third sub-pixel, and an intersection point of extensionlines of two sides of the at least one corner of the first sub-pixel andan intersection point of extension lines of two sides of the at leastone corner of the third sub-pixel are on a straight line parallel to acolumn direction.

In an embodiment, a straight line passing through a center of at leastone sub-pixel of a first sub-pixel and a third sub-pixel along the rowdirection or a column direction divides the at least one sub-pixel intotwo parts, and a ratio of areas of the two parts ranges from 2:8 to 8:2.

In an embodiment, the first sub-pixels are red sub-pixels, the secondsub-pixels are green sub-pixels, and the third sub-pixels are bluesub-pixels.

In an embodiment, each of the first sub-pixels is axisymmetric, thefirst sub-pixels have a same shape, at least some of the firstsub-pixels have symmetry axes that are not in a same direction; or

each of the second sub-pixels is axisymmetric, the second sub-pixelshave a same shape, at least some of the second sub-pixels have symmetryaxes that are not in a same direction; or

each of the third sub-pixels is axisymmetric, the third sub-pixels havea same shape, at least some of the third sub-pixels have symmetry axesthat are not in a same direction.

In an embodiment, each of the first sub-pixels and the third sub-pixelsis axisymmetric, and at least some of the first sub-pixels and the thirdsub-pixels have symmetry axes that are not in a same direction.

In an embodiment, each of the second sub-pixels is non-axi symmetric.

In an embodiment, at least one of each first sub-pixel and each thirdsub-pixel has a shape including only one symmetry axis.

In an embodiment, at least two of a number of symmetry axes of a shapeof each first sub-pixel, a number of symmetry axes of a shape of eachsecond sub-pixel, and a number of symmetry axes of a shape of each thirdsub-pixel are different from each other.

In a second aspect, embodiments of the present disclosure provide adisplay device, which includes the pixel array according to any one ofthe foregoing embodiments of the first aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram showing a structure of film layers of anexemplary pixel array.

FIG. 2 is a schematic diagram showing an exemplary pixel array.

FIG. 3 a is a schematic diagram showing a quadrilateral.

FIG. 3 b is a schematic diagram showing another quadrilateral.

FIG. 4 is a schematic diagram showing a pixel array according to (afirst example) of embodiments of the present disclosure.

FIG. 5 is a schematic diagram showing the distribution of actualbrightness centers of a pixel array, during displaying, with a firstcorner of each blue sub-pixel being rounded (i.e., circularly chamfered)and being similar to a right angle, according to an embodiment of thepresent disclosure.

FIG. 6 is a schematic diagram showing a blue sub-pixel according to anembodiment of the present disclosure.

FIG. 7 is a schematic diagram showing a blue sub-pixel according to anembodiment of the present disclosure.

FIG. 8 is a schematic diagram showing a red sub-pixel and a bluesub-pixel disposed adjacent to each other in a same row according to anembodiment of the present disclosure.

FIG. 9 is a schematic diagram showing a red sub-pixel and a bluesub-pixel disposed adjacent to each other in a same column according toan embodiment of the present disclosure.

FIG. 10 is a schematic diagram showing the distribution of sub-pixels ina first one, which is at the top left corner of the pixel array shown inFIG. 4 , of second virtual quadrilaterals of the pixel array.

FIG. 11 is a schematic diagram showing a pixel array according to asecond example of embodiments of the present disclosure.

FIG. 12 is a schematic diagram showing the distribution of sub-pixels ina first one, which is at the top left corner of the pixel array shown inFIG. 11 , of second virtual quadrilaterals of the pixel array.

FIG. 13 is a schematic diagram showing a pixel array according to athird example of embodiments of the present disclosure.

FIG. 14 is a schematic diagram showing the distribution of sub-pixels ina first one, which is at the top left corner of the pixel array shown inFIG. 13 , of second virtual quadrilaterals of the pixel array.

FIG. 15 is a schematic diagram showing a pixel array according to afourth example of embodiments of the present disclosure.

FIG. 16 is a schematic diagram showing the distribution of sub-pixels ina first one, which is at the top left corner of the pixel array shown inFIG. 15 , of second virtual quadrilaterals of the pixel array.

FIG. 17 is a schematic diagram showing a pixel array according to afifth example of embodiments of the present disclosure.

FIG. 18 is a schematic diagram showing the distribution of sub-pixels ina first one, which is at the top left corner of the pixel array shown inFIG. 17 , of second virtual quadrilaterals of the pixel array.

FIG. 19 is a schematic diagram showing a pixel array in which a firstcorner of each blue sub-pixel is rectilinearly (or flatly) chamfered,according to an embodiment of the present disclosure.

FIG. 20 is a schematic diagram showing the distribution of sub-pixels ina first one, which is at the top left corner of the pixel array shown inFIG. 19 , of second virtual quadrilaterals of the pixel array.

FIG. 21 is a schematic diagram showing a pixel array in which a firstcorner of each red sub-pixel is rectilinearly (or flatly) chamfered,according to an embodiment of the present disclosure.

FIG. 22 is a schematic diagram showing the distribution of actualbrightness centers of a pixel array, during displaying, with a firstcorner of each red sub-pixel being rounded (i.e., circularly chamfered)and being similar to a right angle, according to an embodiment of thepresent disclosure.

FIG. 23 is a schematic diagram showing a pixel array in which a firstcorner of each green sub-pixel is rectilinearly (or flatly) chamfered,according to an embodiment of the present disclosure.

FIG. 24 is a schematic diagram showing a pixel array in which a firstcorner of each of red sub-pixels and blue sub-pixels is rectilinearly(or flatly) chamfered, according to an embodiment of the presentdisclosure.

DETAILED DESCRIPTION

To enable one of ordinary skill in the art to better understandtechnical solutions of the present disclosure, the present disclosurewill be further described in detail below with reference to theaccompanying drawings and exemplary embodiments.

Unless defined otherwise, technical or scientific terms used hereinshall have the general meaning as understood by one of ordinary skill inthe art to which the present disclosure belongs. The terms of “first”,“second”, and the like used herein are not intended to indicate anyorder, quantity, or importance, but rather are used for distinguishingone element from another. Further, the terms “a”, “an”, “the”, and thelike used herein do not denote a limitation of quantity, but ratherdenote the presence of at least one element. The term of “comprising”,“including”, or the like, means that the element or item preceding theterm contains the element or item listed after the term and itsequivalent, but does not exclude the presence of other elements oritems. The terms “connected”, “coupled”, and the like are not limited tophysical or mechanical connections, but may include electricalconnections, whether direct or indirect connections. The terms “upper”,“lower”, “left”, “right”, and the like are used only for indicatingrelative positional relationships, and when the absolute position of anobject being described is changed, the relative positional relationshipsmay also be changed accordingly.

The inventors of the present inventive concept have found that, in thecurrent OLED display device, a distance between adjacent two of thearranged pixels is large such that an opening area of each of the pixelsis small under the condition of a same resolution, and thus a displaybrightness requirement can be met by increasing a driving current.However, operating the OLED display device at the large driving currenttends to increase an aging speed of the OLED display device, therebyreducing a lifetime of the OLED display device.

It should be noted herein that a row direction and a column directiononly represent different directions in embodiments of the presentdisclosure, but are not limited to be perpendicular to each other. Inthe drawings illustrating embodiments of the present disclosure, a casewhere the row direction and the column direction are perpendicular toeach other is shown as merely an example, but does not limit theembodiments of the present disclosure.

In addition, a case where two objects are identical or equal to eachother in an embodiment of the present disclosure does not limit to thecase where the two objects are exactly the same in size or shape, butmay include the case where the two objects are approximately the same orapproximately equal to each other within a certain error range.

Before describing a pixel array, a display device, and a high-precisionmask according to embodiments of the present disclosure, the concepts ofa sub-pixel, a first sub-pixel, a second sub-pixel, a third sub-pixel,and the like, which will be further described later, will be explainedfirst. In an embodiment of the present disclosure, the pixel arrayrefers to an arrangement structure of light emitting devices of (or withor having) different colors in a display substrate, while an arrangementstructure of pixel circuits for driving the respective light emittingdevices is not limited. Correspondingly, it should be understood thatthe sub-pixel in an embodiment of the present disclosure refers to astructure of a light emitting device, and the first sub-pixel, thesecond sub-pixel, and the third sub-pixel represent sub-pixels of threedifferent colors, respectively. In an embodiment of the presentdisclosure, description may be made by taking an example in which thefirst sub-pixel is a red sub-pixel, the second sub-pixel is a greensub-pixel, and the third sub-pixel is a blue sub-pixel. However, theexample, in which the first sub-pixel is a red sub-pixel, the secondsub-pixel is a green sub-pixel, and the third sub-pixel is a bluesub-pixel, does not limit the scope of an embodiment of the presentdisclosure.

A shape of each sub-pixel is generally determined by an opening of thesub-pixel in a pixel definition layer, and a light emitting layer isformed at least partially in the opening of the sub-pixel. In this way,a shape of a light emitting area of a sub-pixel, i.e., a shape of thesub-pixel referred to in an embodiment of the present disclosure, isdefined. When a shape of an opening of a sub-pixel is quadrilateral, ashape of the sub-pixel is quadrilateral.

In addition, in an embodiment of the present disclosure, the shape of atleast one of the red sub-pixel, the green sub-pixel, and the bluesub-pixel includes a polygon. The following embodiment of the presentdisclosure will be described by taking an example in which the redsub-pixel, the green sub-pixel and the blue sub-pixel are all polygons.Each polygon may have three or more corners depending on a shape of thepolygon, and for example, a quadrilateral or a quadrilateral-like shapeincludes four vertex angles. FIG. 3 a is a schematic diagram showing apolygon, and FIG. 3 b is a schematic diagram showing another polygon. Asshown in FIGS. 3 a and 3 b , each polygon includes four vertex angles,which are a first corner 11, a second corner 12, a third corner 13, anda fourth corner 14. For example, the first corner 11 and the secondcorner are disposed opposite to each other, and the third corner 13 andthe fourth corner 14 are disposed opposite to each other. Of course, itshould be understood that, if a sub-pixel has a shape of a polygon, thenumber of vertex angles of the sub-pixel may alternatively be more thanfour, which is not limited in an embodiment of the present disclosure.However, it should be noted that a so-called vertex angle in anembodiment of the present embodiment is not necessarily an angle betweentwo straight lines, but actually, portions, which extend toward a vertexof the vertex angle to intersect each other, of two sides of the vertexangle may be formed as an arc line segment or a straight line segmentsuch that the vertex angle becomes circularly chamfered or rectilinearlychamfered. As shown in FIGS. 3 a and 3 b , in an embodiment of thepresent disclosure, description will be made by taking an example inwhich the first corner 11 of at least one of the blue sub-pixel, the redsub-pixel, and the green sub-pixel is circularly chamfered orrectilinearly chamfered, and the remaining corners thereof are similarto right angles, respectively. However, an embodiment of the presentdisclosure is not limited to this example. The second corner 12, thethird corner 13 and the fourth corner 14 are substantially the same. Forexample, and the second corner 12, the third corner 13 and the fourthcorner 14 are similar to right angles, which means these three cornersmay be rounded corners but each have curvature radiuses smaller than acurvature radius of the first corner 11. It should be noted that, thesecond corner 12, the third corner 13 and the fourth corner 14 beingsubstantially the same means that, for example, the three corners have asame angle value, a same contour, a same size, a same curvature ofrounded corner, and/or the like.

To make the structure of each sub-pixel in the pixel array according toan embodiment of the present disclosure clearer, a structure of filmlayers of the pixel array according to an embodiment of the presentdisclosure will be described in combination with a method formanufacturing the pixel array. FIG. 1 is a schematic diagram showing anexemplary structure of the film layers of the pixel array. As shown inFIG. 1 , the method may include the following steps.

(1) A base substrate is formed on a glass carrier plate.

In some exemplary embodiments, the base substrate 010 may be a flexiblebase substrate, and for example, include a first flexible materiallayer, a first inorganic material layer, a semiconductor layer, a secondflexible material layer, and a second inorganic material layer stackedin sequence on the glass carrier plate. Each of the first flexiblematerial layer and the second flexible material layer is made ofpolyimide (PI), polyethylene terephthalate (PET), a polymer soft filmsubjected to surface treatment, or the like. Each of the first inorganicmaterial layer and the second inorganic material layer is made ofsilicon nitride (SiNx), silicon oxide (SiOx), or the like for improvingthe water and oxygen resistance of the base substrate, and the firstinorganic material layer and the second inorganic material layer arealso referred to as barrier layers. A material of the semiconductorlayer may be amorphous silicon (a-si). In some exemplary embodiments,the stacked structure may be PI1/Barrier1/a-si/PI2/Barrier2, as anexample. A manufacturing process of the stacked structure may include:firstly, coating a polyimide layer on a glass carrier plate, and curingthe polyimide layer to form a film as the first flexible layer (PI1);next, depositing a barrier film on the first flexible layer to form afirst barrier layer (Barrier1) covering the first flexible layer; then,depositing an amorphous silicon film on the first barrier layer to forman amorphous silicon (a-si) layer covering the first barrier layer;subsequently, coating a polyimide layer on the amorphous silicon layer,and curing the polyimide layer to form a film as the second flexiblelayer (PI2); thereafter, depositing a barrier film on the secondflexible layer to form the second barrier layer (Barrier2) covering thesecond flexible layer, thereby completing the formation of the basesubstrate 010, as shown in FIG. 1 .

(2) A driving structure layer is formed on the base substrate.

The driving structure layer includes a plurality of driving circuits,each of which includes a plurality of transistors and at least onestorage capacitor, and for example, each of the plurality of drivingcircuits may adopt a 2T1C (i.e., 2 transistors and 1 capacitor), 3T1C(i.e., 3 transistors and 1 capacitor) or 7T1C (i.e., 7 transistors and 1capacitor) design. Illustration will be made by taking an example inwhich three sub-pixels are included and the driving circuit of eachsub-pixel includes only one transistor and one storage capacitor.

In some embodiments, a manufacturing process of the driving structurelayer may be the one as described below. The manufacturing process ofthe driving circuit is now described by taking a red sub-pixel 01 as anexample.

A first insulating film and an active layer film are sequentiallydeposited on the base substrate 010, and the active layer film ispatterned through a patterning process to form a first insulating layer011 covering the whole base substrate 010 and an active layer patternarranged on the first insulating layer 011. The active layer patternincludes at least a first active layer.

Next, a second insulating film and a first metal film are sequentiallydeposited, and the first metal film is patterned through a patterningprocess to form a second insulating layer 012 covering the active layerpattern and a first gate metal layer pattern disposed on the secondinsulating layer 012. The first gate metal layer pattern includes atleast a first gate electrode and a first capacitor electrode.

Then, a third insulating film and a second metal film are sequentiallydeposited, and the second metal film is patterned through a patterningprocess to form a third insulating layer 013 covering the first gatemetal layer and a second gate metal layer pattern arranged on the thirdinsulating layer 013. The second gate metal layer pattern includes atleast a second capacitor electrode, and a position of the secondcapacitor electrode corresponds to a position of the first capacitorelectrode.

Subsequently, a fourth insulating film is deposited, and patternedthrough a patterning process to form a fourth insulating layer 014covering the second gate metal layer pattern. The fourth insulatinglayer 014 is provided with at least two first through holes, andportions of the fourth insulating layer 014, the third insulating layer013 and the second insulating layer 012 in the two first through holesare etched away to expose a surface of the first active layer.

Thereafter, a third metal film is deposited, and patterned through apatterning process to form a source-drain metal layer pattern on thefourth insulating layer 014. The source-drain metal layer patternincludes at least a first source electrode and a first drain electrodewhich are located in a display region. The first source electrode andthe first drain electrode may be connected to the first active layerthrough the first through holes, respectively.

In the driving circuit of each red sub-pixel 01 in the display region,the first active layer, the first gate electrode, the first sourceelectrode, and the first drain electrode may form a first transistor210, and the first capacitor electrode and the second capacitorelectrode may form a first storage capacitor 212. In the abovemanufacturing process, a driving circuit of each green sub-pixel 02 anda driving circuit of each blue sub-pixel 03 may be simultaneouslyformed.

In some exemplary embodiments, the first insulating layer 011, secondinsulating layer 012, third insulating layer 013, and fourth insulatinglayer 014 may be a single layer, a multi-layer, or a composite layerincluding any one or more of silicon oxide (SiOx), silicon nitride(SiNx), and silicon oxynitride (SiON). The first insulating layer 011may be referred to as a buffer layer for improving the water and oxygenresistance of the base substrate. The second insulating layer 012 andthe third insulating layer 013 may be referred to as a gate insulator(GI) layer. The fourth insulating layer 014 may be referred to as aninterlayer dielectric (ILD) layer. Each of the first metal film, thesecond metal film and the third metal film is made of a metal material,such as any one or more of silver (Ag), copper (Cu), aluminum (Al),titanium (Ti), and molybdenum (Mo), or made of an alloy of the abovemetals, such as aluminum neodymium (AlNd) or molybdenum niobium (MoNb),and may have a single-layer structure or a multi-layer compositestructure such as Ti/Al/Ti, or the like. The active layer film is madeof one or more of amorphous indium gallium zinc oxide (a-IGZO), zincoxynitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon(a-Si), polycrystalline silicon (p-Si), hexathiophene, polythiophene,and the like. That is, the present disclosure may be applicable totransistors respectively manufactured based on an oxide technology, asilicon technology, and an organic substance technology.

(3) A planarization layer is formed on the base substrate provided withthe above patterns.

In some exemplary embodiments, a planarization film of an organicmaterial is coated on the base substrate 010 on which the above patternsare formed to form a planarization (PLN) layer 015 covering the entirebase substrate 010, and a plurality of second through holes are formedin the planarization layer 015 and in the display region throughmasking, exposing, and developing processes. Portions of theplanarization layer 015 in the plurality of second through holes areremoved by the developing process to expose a surface of the first drainelectrode of the first transistor 210 of the driving circuit of each redsub-pixel 01, a surface of the first drain electrode of the firsttransistor of the driving circuit of each green sub-pixel 02, and asurface of the first drain electrode of the first transistor of thedriving circuit of each blue sub-pixel 03, respectively.

(4) A pattern of a first electrode is formed on the base substrateprovided with the above patterns. In some examples, the first electrodeis a reflective anode.

In some exemplary embodiments, a conductive film is deposited on thebase substrate 010 on which the above patterns are formed, and ispatterned through a patterning process to form the pattern of the firstelectrode. A first anode 213 of each red sub-pixel 01 is connected tothe first drain electrode of the first transistor 210 through a secondthrough hole, a second anode 223 of each green sub-pixel 02 is connectedto the first drain electrode of the first transistor of the greensub-pixel 02 through a second through hole, and a third anode 233 ofeach blue sub-pixel 03 is connected to the first drain electrode of thefirst transistor of the blue sub-pixel 03 through a second through hole.

In some examples, the first electrode may be made of a metal material,such as one or more of magnesium (Mg), silver (Ag), copper (Cu),aluminum (Al), titanium (Ti), and molybdenum (Mo), or made of an alloyof the above metals, such as aluminum neodymium (AlNd) or molybdenumniobium (MoNb), and may have a single-layer structure, or a multi-layercomposite structure such as Ti/Al/Ti or the like, or a stack structureof a metal and a transparent conductive material, such as reflectivematerials of ITO/Ag/ITO, Mo/AlNd/ITO, or the like.

(5) A pixel definition layer (PDL) pattern is formed on the basesubstrate provided with the above patterns.

In some exemplary embodiments, a pixel definition film is coated on thebase substrate 010 on which the above patterns are formed, and issubjected to masking, exposing, and developing processes to form thepixel definition layer pattern. As shown in FIG. 1 , a portion of thepixel definition layer 30 in the display region includes a plurality ofsub-pixel definition portions 302, and a plurality of openings 301 ofthe pixel definition layer are formed between every adjacent two of theplurality of sub-pixel definition portions 302. Portions of the pixeldefinition layer 30 in the plurality of openings 301 are removed by adeveloping process to expose at least a portion of a surface of thefirst anode 213 of each red sub-pixel 01, at least a portion of asurface of the second anode 223 of each green sub-pixel 02, and at leasta portion of a surface of the third anode 233 of each blue sub-pixel 03,respectively.

In some examples, the pixel definition layer 30 may be made ofpolyimide, acryl, polyethylene terephthalate, or the like.

(6) A pattern of a post spacer (PS) is formed on the base substrate onwhich the above patterns are formed.

In some exemplary embodiments, a film of organic material is coated onthe base substrate 010 on which the above patterns are formed, andsubjected to masking, exposing, and developing processes to form apattern of a post spacer 34. The spacer post 34 may serve as a supportlayer configured to support a fine metal mask (FMM) during evaporationcoating. In some examples, two adjacent post spacers 34 are spaced apartfrom each other by one repeating unit along a row direction in which thesub-pixels are arranged. For example, the post spacer 34 may be locatedbetween a red sub-pixel 01 and a blue sub-pixel 03 which are adjacent toeach other.

(7) An organic functional layer and a second electrode are sequentiallyformed on the base substrate provided with the above patterns. In someexamples, the second electrode is a transparent cathode. Each lightemitting element may emit light from a side of the transparent cathodedistal to the base substrate 010, thereby actualizing top emission. Insome examples, the organic functional layer of each light emittingelement includes: a hole injection layer, a hole transport layer, alight emitting layer, and an electron transport layer.

In some exemplary embodiments, on the base substrate 010 on which theabove patterns are formed, a hole injection layer 241 and a holetransport layer 242 are sequentially formed through evaporation coatingby using an open mask, next a blue light emitting layer 236, a greenlight emitting layer 226, and a red light emitting layer 216 aresequentially formed through evaporation coating by using the FMM, andthen an electron transport layer 243, a cathode 244, and an opticalcoupling layer 245 are sequentially formed through evaporation coatingby using an open mask. The hole injection layer 241, the hole transportlayer 242, the electron transport layer 243, and the cathode 244 are allcommon layers of the plurality of sub-pixels. In some examples, theorganic functional layer may further include a microcavity adjustmentlayer positioned between the hole transport layer and the light emittinglayer. For example, after the hole transport layer is formed, a bluemicrocavity adjustment layer, a blue light emitting layer, a greenmicrocavity adjustment layer, a green light emitting layer, a redmicrocavity adjustment layer, and a red light emitting layer may besequentially formed through evaporation coating by using the FMM.

In some exemplary embodiments, the organic functional layer is formed ineach sub-pixel region, such that the organic functional layer isconnected to a corresponding anode. The cathode is formed on the pixeldefinition layer and connected to the organic functional layer.

In some exemplary embodiments, the cathode may be made of any one ormore of magnesium (Mg), silver (Ag), and aluminum (Al), or made of analloy of any one or more of the above metals, or made of a transparentconductive material such as indium tin oxide (ITO), or may be amulti-layer composite structure of a metal and a transparent conductivematerial.

In some exemplary embodiments, the optical coupling layer may be formedon a side of the cathode 244 distal to the base substrate 010, and maybe a common layer of the plurality of sub-pixels. The optical couplinglayer may cooperate with the transparent cathode to increase lightoutput. For example, a material of the optical coupling layer may be asemiconductor material. However, the present embodiment is not limitedthereto.

(8) An encapsulation layer is formed on the base substrate provided withthe above patterns.

In some exemplary embodiments, the encapsulation layer is formed on thebase substrate 010 on which the above patterns are formed, and mayinclude a first encapsulation layer 41, a second encapsulation layer 42,and a third encapsulation layer 43 that are stacked togethersequentially. The first encapsulation layer 41 is made of an inorganicmaterial and covers the cathode 244 in the display region. The secondencapsulation layer 42 is made of an organic material. The thirdencapsulation layer 43 is made of an inorganic material, and covers thefirst encapsulation layer 41 and the second encapsulation layer 42.However, the present embodiment is not limited thereto. In someexamples, the encapsulation layer may be a five-layer structure that isinorganic/organic/inorganic/organic/inorganic.

FIG. 2 shows a schematic diagram of an exemplary pixel array. As shownin FIG. 2 , the pixel array includes a plurality of first pixel rows 1and a plurality of second pixel rows 2, and the first pixel rows 1 andthe second pixel rows 2 are alternately arranged. Each first pixel row 1includes red sub-pixels 01 and blue sub-pixels 03 which are arrangedalternately, and the red sub-pixels 01 and the blue sub-pixels 03, whichare positioned in a same column, in the plurality of first pixel rows 1are also arranged alternately. Each second pixel row 2 includes aplurality of green sub-pixels 02 arranged side by side, and theplurality of green sub-pixels 02 are arranged to be staggered with thered sub-pixels 01 and the blue sub-pixels 03 in an adjacent row. Forsuch an arrangement of pixels, the pixel array may be divided intorepeating units arranged in an array, and each repeating unit includestwo rows and four columns of sub-pixels. That is, each repeating unitincludes 1 (i.e., one) red sub-pixel 01, 1 (i.e., one) blue sub-pixel03, and 2 (i.e., two) green sub-pixels 02, and the red sub-pixel 01 andthe blue sub-pixel 03 are common sub-pixels. The 4 sub-pixels mayactualize displaying of 2 virtual pixel units through a virtualalgorithm. For example, the red sub-pixel 01 in the second repeatingunit in a first row, the blue sub-pixel 03 in the first repeating unitin the first row, and the green sub-pixel 02 closest to the redsub-pixel 01 and the blue sub-pixel 03 form a virtual pixel unit, andthe red sub-pixel 01 and the blue sub-pixel 03 in the second repeatingunit in the first row and the green sub-pixel 02 closest to the redsub-pixel 01 and the blue sub-pixel 03 form a virtual pixel unit; inaddition, the blue sub-pixel 03 and the other green sub-pixel 02 in thesecond repeating unit in the first row and the closest red sub-pixel 01in the third repeating unit in the first row form a virtual pixel unit.As such, a resolution of a display panel including the pixel array canbe improved effectively.

However, the inventors of the present inventive concept have found that,since each of each red sub-pixel 01 and each blue sub-pixel 03 is commonsub-pixel and has an area greater than an area of each green sub-pixel02 according to light emission spectra of each red sub-pixel 01 and eachblue sub-pixel 03, in particular, an area of each blue sub-pixel 03 isgreater than an area of each red sub-pixel 01, actual brightness centersformed by the virtual pixel units are not uniform when the display paneldisplays. In view of this, other embodiments of the present disclosureprovide the following technical solutions.

In a first aspect, FIG. 4 is a schematic diagram showing a pixel arrayaccording to (a first example) of embodiments of the present disclosure.As shown in FIG. 4 , the pixel array according to the present embodimentincludes a plurality of first pixel rows 1 and a plurality of secondpixel rows 2, and the plurality of first pixel rows 1 and the pluralityof second pixel rows 2 are arranged alternately. Each first pixel row 1includes red sub-pixels 01 and blue sub-pixels 03 which are arrangedalternately, and the red sub-pixels 01 and the blue sub-pixels 03, whichare positioned in a same column, in the plurality of first pixel rows 1are also arranged alternately. Each second pixel row 2 includes aplurality of green sub-pixels 02 arranged side by side, and theplurality of green sub-pixels 02 are arranged to be staggered with thered sub-pixels 01 and the blue sub-pixels 03 in an adjacent row. Linessequentially connecting centers of two red sub-pixels 01 and two bluesub-pixels 03 which are arranged in an array (i.e., lines sequentiallyconnecting four centers together) form a first virtual quadrilateral (orquadrangle) 10, and a green sub-pixel 02 is arranged within each firstvirtual quadrilateral 10. For example, at least some interior angles ofeach first virtual quadrilateral 10 are not equal to A shape of each ofeach red sub-pixel 01, each green sub-pixel 02 and each blue sub-pixel03 includes a polygon. Further, in at least one of each red sub-pixel01, each green sub-pixel 02 and each blue sub-pixel 03 which is apolygon, a distance between an intersection point of extension lines oftwo sides of at least one vertex angle and a center of the one sub-pixelis not equal to a distance between an intersection point of extensionlines of two sides of the opposite angle of the one vertex angle and thecenter of the one sub-pixel.

It should be noted that, in an embodiment of the present disclosure, thepolygon includes, but is not limited to, a rounded polygon (i.e., apolygon with a rounded corner), a convex polygon, and a concave polygon.A center of a sub-pixel is, for example, a geometric center of thesub-pixel, or an intersection point of perpendicular bisectors of sidesof the sub-pixel, or a point in a sub-pixel which has approximatelyequal vertical distances from sides of the sub-pixel. Of course, thecenter of a sub-pixel may be allowed to have a certain error. Forexample, the center of a sub-pixel may be any point within a circlehaving the geometric center of the sub-pixel as a center and having aradius of 3 μm.

In the present embodiment, the shapes of some of the sub-pixels areadjusted such that at least some interior angles of each first virtualquadrilateral 10, which is formed by lines sequentially connectingcenters of two red sub-pixels 01 and two blue sub-pixels 03 which arearranged in an array, are not equal to 90°, and the distance between theintersection point of extension lines of two sides of at least onevertex angle in at least one of each red sub-pixel 01, each greensub-pixel 02 and each blue sub-pixel 03 and the center of the onesub-pixel is not equal to the distance between the intersection point ofextension lines of two sides of the opposite angle of the one vertexangle and the center of the one sub-pixel, thereby adjusting the actualbrightness center of each virtual pixel unit, and making thedistribution of the actual brightness centers in an entire display panelmore uniform.

In some embodiments, if a first corner of each blue sub-pixel 03 iscircularly chamfered or rectilinearly chamfered, a distance between thevertex of the first corner of each blue sub-pixel 03 and a boundary ofthe light emitting layer is different from each of the distances betweenthe vertexes of other corners of each blue sub-pixel 03 and the boundaryof the light emitting layer. For example, the vertex of the first cornerof each blue sub-pixel 03 has a certain distance from a boundary of thepixel, while the vertex of each of the other corners of each bluesub-pixel 03 has a distance of approximately 0 from the boundary. Thatis, the distance between the vertex of the first corner of each bluesub-pixel 03 and the boundary is greater than the distance between thevertex of another corner and the boundary of the blue sub-pixel 03.

With further reference to FIG. 4 , the light emitting layers in thepixel definition layer define effective light emitting areas of thesub-pixels, respectively, and the effective light emitting areas of eachred sub-pixel 01, each green sub-pixel 02 and each blue sub-pixel 03 area first effective light emitting area, a second effective light emittingarea and a third effective light emitting area, respectively. In someembodiments, each first effective light emitting area is defined by alight emitting layer which is in a corresponding red sub-pixel 01, islocated between the anode and the cathode opposite to each other in adirection perpendicular to the base substrate, and is to be driven toemit light. For example, each second effective light emitting area isdefined by a light emitting layer which is in a corresponding greensub-pixel 02, is located between the anode and the cathode opposite toeach other in the direction perpendicular to the base substrate, and isto be driven to emit light. In some embodiments, each effective lightemitting area is defined by a corresponding light emitting layer and anelectrode (the anode or the cathode) or a portion of the electrode thattransports carriers (holes or electrons) with (from/to) thecorresponding light emitting layer. In some embodiments, each effectivelight emitting area is defined by at least a portion of the cathode andat least a portion of the anode, an orthogonal projection of the atleast a portion of the cathode on the base substrate and an orthogonalprojection of the at least a portion of the anode on the base substrateoverlap each other, the orthogonal projections of the at least a portionof the cathode and the at least a portion of the anode on the basesubstrate do not overlap an orthogonal projection of a first insulatinglayer on the base substrate, and the first insulating layer is locatedbetween the cathode and the anode in the direction perpendicular to thebase substrate. For example, the first insulating layer includes thepixel definition layer. In some embodiments, each of each red sub-pixel01, each green sub-pixel 02 and each blue sub-pixel 03 includes a firstelectrode, a light emitting layer on a side of the first electrodedistal to the base substrate, and a second electrode on a side of thelight emitting layer distal to the first electrode. A second insulatinglayer is arranged between the first electrode and the light emittinglayer and/or between the second electrode and the light emitting layer,in the direction perpendicular to the base substrate. A projection ofthe second insulating layer on the base substrate overlaps a projectionof the first electrode or the second electrode on the base substrate.Further, the second insulating layer has an opening, and the opening ofthe second insulating layer may expose at least a portion of the firstelectrode or a portion of the second electrode on the side proximal tothe light emitting layer, such that the first electrode or the secondelectrode is in contact with the light emitting layer or the functionallayer facilitating light emission. Each of each first effective lightemitting area and each second effective light emitting area is definedby a portion of the first electrode or a portion of the second electrodein contact with the light emitting layer or the functional layerfacilitating light emission. In some embodiments, the second insulatinglayer includes the pixel definition layer. In some embodiments, thefunctional layer facilitating light emission may be any one or more ofthe hole injection layer, the hole transport layer, the electrontransport layer, a hole blocking layer, an electron blocking layer, anelectron injection layer, an auxiliary light emitting layer, aninterface improving layer, an anti-reflection layer, and the like. Insome embodiments, the first electrode may be the anode and the secondelectrode may be the cathode. In some embodiments, the first electrodemay include at least two laminated layers of indium tin oxide (ITO) andsilver (Ag), and for example, may be a three laminated layers of ITO, Agand ITO. In some embodiments, the second electrode may include any oneor more of magnesium (Mg), Ag, ITO, and indium zinc oxide (IZO), and forexample, may be a mixed layer or an alloy layer of Mg and Ag.

Each sub-pixel includes a light emitting layer. Each red sub-pixel 01includes a first color light emitting layer in an opening and on thepixel definition layer, and each green sub-pixel 02 includes a secondcolor light emitting layer in an opening and on the pixel definitionlayer.

For example, an arrangement in which four of the green sub-pixels 02surround one of the red sub-pixels 01 may be an arrangement in theinterior of the display region, and an arrangement at an edge of thedisplay region may be different from the arrangement in the interior ofthe display region. For example, at the edge of the display region, in acase where the red sub-pixel 01 is a sub-pixel in the first row or thefirst column or the last row or the last column, only two of the greensub-pixels 02 may surround the red sub-pixel 01. For example, the edgeof the display region may include a rounded corner or the display regionis a special-shaped display region, such as a non-rectangular displayregion like a circular display region, or a rectangular display regionwith a hole formed near a boundary of the rectangular display region. Inthis case, at the edge of the display region, one of the red sub-pixels01 may be surrounded by one, two or three of the green sub-pixels 02.

In some embodiments, the light emitting layer 101 of each red sub-pixel,the light emitting layer 102 of each green sub-pixel, and the lightemitting layer 103 of each blue sub-pixel may have a same orsubstantially the same shape. Each light emitting layer in the pixeldefinition layer defines an effective light emitting area of eachsub-pixel.

In an embodiment of the present disclosure, the first corner of eachblue sub-pixel 03 may be circularly chamfered or rectilinearlychamfered, and the distance between the vertex of the first corner ofeach blue sub-pixel 03 and the boundary of the corresponding lightemitting layer is different from the distance between the vertex of eachof the other corners thereof and the boundary of the corresponding lightemitting layer. For example, the distance between the vertex of thefirst corner of each blue sub-pixel 03 and the boundary of thecorresponding light emitting layer is greater than the distance betweenthe vertex of each of the other corners thereof and the boundary of thecorresponding light emitting layer.

In some embodiments, the minimum distances between a center of a greensub-pixel 02 in each first virtual quadrilateral 10 and the boundariesof the light emitting areas of the two red sub-pixels 01 directlyadjacent to the green sub-pixel 02 are equal to each other. In addition,the minimum distances between the center of the green sub-pixel 02 andthe boundaries of the light emitting areas of the two blue sub-pixels 03directly adjacent to the green sub-pixel 02 are also equal to eachother. For example, a ratio of the minimum distances between the centerof the green sub-pixel 02 and the boundaries of the light emitting areasof the two red sub-pixels 01 directly adjacent to the green sub-pixel 02to the minimum distances between the center of the green sub-pixel 02and the boundaries of the light emitting areas of the two bluesub-pixels 03 directly adjacent to the green sub-pixel 02 ranges fromabout 0.8 to about 1.2.

Specifically, FIG. 5 is a schematic diagram showing the distribution ofactual brightness centers of a pixel array, during displaying, with thefirst corner of each blue sub-pixel 03 being rounded (i.e., circularlychamfered) and being similar to a right angle, according to anembodiment of the present disclosure. As shown in FIG. 5 , for example,the first corners of all of the blue sub-pixels in the pixel array maybe directed to the right. In FIG. 5 , the dotted line corner at thefirst corner of each blue sub-pixel 03 in FIG. 5 represents a pixelarray in the related art in which the first corner of each bluesub-pixel 03 is similar to a right angle, symbols “X” represent actualbrightness centers when the pixel array in the related art displays, andsymbols “ ” represent the actual brightness centers of the pixel arrayaccording to an embodiment of the present disclosure when displaying. Ascan be seen from FIG. 5 , when the first corners of the blue sub-pixelsare rounded, the distribution of the actual brightness centers thereofis more uniform.

In some embodiments, each of the interior angles of each first virtualquadrilateral 10 ranges from about 70° to about 110°, and may be closerto 90° to be better. However, each of the interior angles of each firstvirtual quadrilateral 10 is not limited to be in the range of 70° to110°, as long as not all of the interior angles of each first virtualquadrilateral 10 are equal to 90°.

In some embodiments, each first virtual quadrilateral 10 includes, butis not limited to, a virtual parallelogram or a virtual trapezoid. Forexample, each first virtual quadrilateral 10 may be any one of arhombus, an isosceles trapezoid, and a right trapezoid (which may alsobe referred to as a right-angled trapezoid).

In some embodiments, FIG. 6 is a schematic diagram showing a bluesub-pixel according to an embodiment of the present disclosure. As shownin FIG. 6 , the first corner of a blue sub-pixel 03 is rounded (i.e.,circularly chamfered) or rectilinearly chamfered. A distance between anintersection point of extension lines of two sides of the first cornerand a vertex of the first corner is d1, and a distance between thevertex of the first corner and a vertex of the second corner is d2,d1/d2 ranging from about ⅕ to about ½. For example, the vertex of thefirst corner of a blue sub-pixel 03 is a point, which has the minimumdistance from the intersection point of the extension lines of the twosides of the corresponding vertex angle, at a boundary of the bluesub-pixel. Similarly, in a case where the first corner of each of a redsub-pixel 01 and a green sub-pixel 02 is circularly chamfered orrectilinearly chamfered, a distance between an intersection point ofextension lines of two sides of the first corner thereof and a vertex ofthe first corner and a distance between the vertex of the first cornerand a vertex of the second corner may be set according to theabove-described dimensions (or sizes).

In some embodiments, virtual vertex angles formed by intersection ofextension lines of two sides of respective vertex angles of the secondcorner, the third corner and the fourth corner of a blue sub-pixel 03are approximately equal to each other, and may be about 90°, forexample, may be about 80° to about 100°.

In some embodiments, an area surrounded by the extension lines of thetwo sides of the vertex angle of the first corner of a blue sub-pixel 03and a contour of the first corner is a first hollowed-out area, and anarea surrounded by the extension lines of the two sides of the vertexangle of the second corner of the blue sub-pixel 03 and a contour of aboundary of the second corner is a second hollowed-out area, the firsthollowed-out area being greater than the second hollowed-out area inarea.

In addition, an area surrounded by extension lines of two sides of avertex angle of the third corner of the blue sub-pixel 03 and a contourof a boundary of the third corner is a third hollowed-out area, and anarea surrounded by extension lines of two sides of a vertex angle of thefourth corner of the blue sub-pixel 03 and a contour of a boundary ofthe fourth corner is a fourth hollowed-out area. In some embodiments,the second, third, and fourth hollowed-out areas are approximately equalto each other in area. For example, an area of each of the secondhollowed-out area, the third hollowed-out area and the fourthhollowed-out area is less than 4 μm², and an area of the firsthollowed-out area is greater than 2 μm².

In some embodiments, FIG. 7 is a schematic diagram showing a bluesub-pixel according to the embodiments of the present disclosure. Asshown in FIG. 7 , the first corner of a blue sub-pixel 03 is circularlychamfered or rectilinearly chamfered. A straight line passing throughthe center of the blue sub-pixel 03 along the row direction of the pixelarray divides the blue sub-pixel 03 into two parts having areas S1 andS2, respectively, and a ratio of S1:S2 ranges from about 2:8 to about8:2. Alternatively, a straight line passing through the center of theblue sub-pixel 03 along the column direction of the pixel array dividesthe blue sub-pixel 03 into two parts having areas S1 and S2,respectively, and a ratio of S1:S2 ranges from about 2:8 to about 8:2.Similarly, in a case where the first corner of each of a red sub-pixel01 and a green sub-pixel 02 is circularly chamfered or rectilinearlychamfered, a straight line passing through the center of each of the redsub-pixel 01 and the green sub-pixel 02 along the row or columndirection of the pixel array divides each of the red sub-pixel 01 andthe green sub-pixel 02 into two parts having the same ratio as the ratioof the areas of the two parts of the blue sub-pixel 03.

In some embodiments, as shown in FIG. 6 , the first corner of a bluesub-pixel is circularly chamfered or rectilinearly chamfered, and theextension lines of the two sides of the first corner form a virtualvertex angle of about 90°; and in some embodiments, the virtual vertexangle ranges from about 80° to about 100°. Similarly, in a case wherethe first corner of each of a red sub-pixel 01 and a green sub-pixel 02is circularly chamfered or rectilinearly chamfered, the extension linesof the two sides of the respective first corner of each of the redsub-pixel 01 and the green sub-pixel 02 form an angle substantially thesame as the virtual vertex angle formed by the extension lines of thetwo sides of the first corner of the blue sub-pixel 03.

In some embodiments, a line connecting opposite angles in the rowdirection of a red sub-pixel 01 and a blue sub-pixel 03 in a same row issubstantially on a same straight line or forms an angle of about 30°with the row direction. In addition, in some embodiments, FIG. 8 is aschematic diagram showing a red sub-pixel and a blue sub-pixel that areadjacently disposed in a same row according to the embodiments of thepresent disclosure. As shown in FIG. 8 , in the first pixel row 1, e.g.,in a red sub-pixel 01 and a blue sub-pixel 03 that are adjacentlydisposed in a same row, an extension line of a line connecting endpoints farthest from respective centers on a first side (i.e., the upperside) in the column direction intersects an extension line of a lineconnecting end points farthest from respective centers on an oppositesecond side (i.e., the lower side), with an angle δ1 less than 30°therebetween.

In some embodiments, FIG. 9 is a schematic diagram showing a redsub-pixel and a blue sub-pixel arranged adjacently in a same columnaccording to the embodiments of the present disclosure. As shown in FIG.9, in a red sub-pixel 01 and a blue sub-pixel 03 arranged adjacently ina same column, an extension line of a line connecting end pointsfarthest from respective centers on a first side (i.e., the left side)in the row direction intersects an extension line of a line connectingend points farthest from respective centers on an opposite second side(i.e., the right side), with an angle δ2 less than 30° therebetween.

In some embodiments, for a red sub-pixel 01 and a blue sub-pixel 03adjacent to each other in a same row, at least one corner of the redsub-pixel 01 and at least one corner of the blue sub-pixel 03 areopposite to each other, and an intersection point of extension lines oftwo sides of the at least one corner of the red sub-pixel 01 and anintersection point of extension lines of two sides of the at least onecorner of the blue sub-pixel 03 are located on a straight line parallelto the row direction. Additionally/alternatively, for a red sub-pixel 01and a blue sub-pixel 03 adjacent to each other in a same column, atleast one corner of the red sub-pixel 01 and at least one corner of theblue sub-pixel 03 are opposite to each other, and an intersection pointof extension lines of two sides of the at least one corner of the redsub-pixel 01 and an intersection point of extension lines of two sidesof the at least one corner of the blue sub-pixel 03 are located on astraight line parallel to the column direction. In some embodiments,four first virtual quadrilaterals 10 arranged in an array form a secondvirtual polygon. For example, as shown in FIG. 10 , the second virtualpolygon formed by four first virtual quadrilaterals 10 arranged in anarray has a structure of a quadrilateral such as a rectangle (includinga square). Alternatively, the second virtual polygon is not limited to aquadrilateral, and may be a hexagon or another polygon with more thanfour sides. In an embodiment of the present disclosure, description ismade by taking an example in which the second virtual polygon is aquadrilateral and is referred to as a second virtual quadrilateral 100below. The four green sub-pixels 02 in the second virtual quadrilateral100 are arranged in an X-shape. That is, the green sub-pixels 02 locatedin a same row in the second virtual quadrilateral 100 are symmetricallydisposed with respect to the column direction, and the green sub-pixels02 in a same column in the second virtual quadrilateral 100 aresymmetrically disposed with respect to the row direction. In someembodiments, the red sub-pixels 01 in the second virtual quadrilateral100 are located at a center and vertex angles of the second virtualquadrilateral 100, respectively. The blue sub-pixels 03 in the secondvirtual quadrilateral 100 are located at sides of the second virtualquadrilateral 100. Further, the red sub-pixels 01 located at the vertexangles of the second virtual quadrilateral 100 and the blue sub-pixels03 located at the sides of the second virtual quadrilateral 100 arealternately distributed at the vertex angles and the sides of the secondvirtual quadrilateral 100 in the clockwise direction.

In some embodiments, in the second virtual quadrilateral 100, thecenters of the blue sub-pixels 03 located in a same row aresubstantially on a straight line parallel to the row direction, and/orthe centers of the blue sub-pixels 03 located in a same column aresubstantially on a straight line parallel to the column direction.

In some embodiments, in the second virtual quadrilateral 100, thecenters of the green sub-pixels 02 located in a same row aresubstantially on a straight line parallel to the row direction, and/orthe centers of the green sub-pixels 03 located in a same column aresubstantially on a straight line parallel to the column direction.

In some embodiments, in the pixel array, the red sub-pixels 01 have asame shape, the green sub-pixels 02 have a same shape, and the bluesub-pixels 03 have a same shape. Alternatively, the sub-pixels with asame color may be structures of different shapes, and the structures ofdifferent shapes are uniformly distributed in the sub-pixels with a samecolor. For example, the red sub-pixels 01 in every other row or everyother column have a same shape.

In some embodiments, if the first corner of each blue sub-pixel 03 iscircularly chamfered or rectilinearly chamfered, orientations of thefirst corners of some or all of the blue sub-pixels 03 in the pixelarray may be the same. For example, the first corners of the bluesub-pixels 03 in a same row have a same orientation, the first cornersof the blue sub-pixels 03 in a same column have different orientations.Similarly, the first corners of the green sub-pixels 02 and the redsub-pixels 01, when being circularly chamfered or rectilinearlychamfered, may have the same orientations as the orientations of thefirst corners of the blue sub-pixels 03.

An embodiment of the present disclosure provides a pixel array, which issubstantially the same as the above pixel array. The pixel arrayincludes a plurality of sub-pixels, which include red sub-pixels 01,green sub-pixels 02 and blue sub-pixels 03. The red sub-pixels 01 andthe blue sub-pixels 03 are alternately arranged along the row directionto form a plurality of first pixel rows 1, and the red sub-pixels 01 andthe blue sub-pixels 03, which are positioned in a same column, in theplurality of first pixel rows 1 are alternately arranged. The greensub-pixels 02 are arranged side by side in the row direction to form aplurality of second pixel rows 2. Lines sequentially connecting centersof two red sub-pixels 01 and two blue sub-pixels arranged in an array toeach other form a first virtual quadrilateral 10, and a green sub-pixelis arranged in each first virtual quadrilateral 10. For example, atleast some of the interior angles of the first virtual quadrilateral 10are not equal to 90°. A shape of each of a red sub-pixel 01, a greensub-pixel 02 and a blue sub-pixel 03 includes a polygon. The minimumdistance between the intersection point of extension lines of two sidesof at least one vertex angle in at least one sub-pixel, which has ashape of a polygon, of the red sub-pixel 01, the green sub-pixel 02 andthe blue sub-pixel 03 and the boundary of the at least one sub-pixel isnot equal to the minimum distance between the intersection point ofextension lines of two sides of another vertex angle of the at least onesub-pixel and the boundary of the at least one sub-pixel. For example,referring to FIG. 6 , the first corner of a blue sub-pixel 03 iscircularly chamfered or rectilinearly chamfered, and the distancebetween the intersection point of the extension lines of the two sidesof the first corner and the vertex of the first corner is d1, and thedistance between the vertex of the first corner and the vertex of thesecond corner is d2, a ratio of d1/d2 ranges from about ⅕ to about ½.For example, the vertex of the first corner of the blue sub-pixel 03 isa point, which is at the boundary of the blue sub-pixel 03, with theminimum distance from the intersection point of the extension lines ofthe two sides of the vertex angle of the blue sub-pixel 03.

In some embodiments, each red sub-pixel 01 is axisymmetric, the redsub-pixels 01 have a same shape, but symmetry axes of at least some ofthe red sub-pixels 01 are not in a same direction. Alternatively, eachgreen sub-pixel 02 is axisymmetric, the green sub-pixels 02 have a sameshape, but symmetry axes of at least some of the green sub-pixels 02 arenot in a same direction. Alternatively, each blue sub-pixel 03 isaxisymmetric, the blue sub-pixels 03 have a same shape, but symmetryaxes of at least some of the blue sub-pixels 03 are not in a samedirection. For example, the first corner of each of the blue sub-pixels03 is circularly chamfered or rectilinearly chamfered, and the bluesub-pixels 03 in the pixel array have a same shape. The orientations ofthe first corners of the blue sub-pixels 03 are different, and forexample, the orientations of some of the first corners are directedupward while the orientations of some of the first corners are directedto the left. The symmetry axes of the blue sub-pixels 03 whose firstcorners are directed upward are parallel to the column direction, whilethe symmetry axes of the blue sub-pixels 03 whose first corners aredirected to the left are parallel to the row direction. That is, thesymmetry axes of the blue sub-pixels 03 whose first corners are directedupward and to the left are not in a same direction.

In some embodiments, the red sub-pixels 01 and the blue sub-pixels 03are axisymmetric, and the symmetry axes of at least some of the redsub-pixels 01 and the blue sub-pixels 03 are not in a same direction.For example, the first corners of the red sub-pixels 01 and the bluesub-pixels 03 are all circularly chamfered or rectilinearly chamfered.The first corners of some of the red sub-pixels 01 have orientationsdirected upward, and have symmetry axes parallel to the columndirection. The first corners of some of the blue sub-pixels 03 haveorientations directed to the left, and have symmetry axes parallel tothe row direction. That is, the symmetry axes of the red sub-pixels 01and the blue sub-pixels 03 whose first corners are directed in differentdirections are not in a same direction.

In some embodiments, each green sub-pixel 02 may be asymmetric, and forexample, may be a right trapezoid or the like.

In some embodiments, a shape of at least one of a red sub-pixel 01 and ablue sub-pixel 03 includes only one symmetry axis. For example, a firstcorner of the shape of at least one of a red sub-pixel 01 and a bluesub-pixel 03 is circularly chamfered or rectilinearly chamfered, and asecond corner, a third corner, and a fourth corner of the at least oneof a red sub-pixel 01 and a blue sub-pixel 03 have substantially thesame shape. In this case, the shape of the at least one of a redsub-pixel 01 and a blue sub-pixel 03 includes only one symmetry axis.

In some embodiments, at least two of the number of symmetry axes of theshape of a red sub-pixel 01, the number of symmetry axes of the shape ofa green sub-pixel 02, and the number of symmetry axes of the shape of ablue sub-pixel 03 are different. For example, one of the red sub-pixel01, the green sub-pixel 02 and the blue sub-pixel 03 may beaxisymmetric, and the other two may not be axisymmetric. Alternatively,two of the red sub-pixel 01, the green sub-pixel 02 and the bluesub-pixel 03 may be axisymmetric, and the third one may not beaxisymmetric. Alternatively, all of the red sub-pixel 01, the greensub-pixel 02 and the blue sub-pixel 03 may be axisymmetric, but thenumber of symmetry axes of the red sub-pixel 01, the number of symmetryaxes of the green sub-pixel 02 and the number of symmetry axes of theblue sub-pixel 03 are different from each other, for example, are one,two and four, respectively. Alternatively, all of the red sub-pixel 01,the green sub-pixel 02 and the blue sub-pixel 03 may be axisymmetric,but the number of symmetry axes of one of the red sub-pixel 01, thegreen sub-pixel 02 and the blue sub-pixel 03 is different from thenumber of symmetry axes of each of the other two of the red sub-pixel01, the green sub-pixel 02 and the blue sub-pixel 03, for example, oneof the red sub-pixel 01, the green sub-pixel 02 and the blue sub-pixel03 has two or four symmetry axes, while each of the other two of the redsub-pixel 01, the green sub-pixel 02 and the blue sub-pixel 03 has onesymmetry axis. The pixel array according to an embodiment of the presentdisclosure will be further described below with reference to specificexamples.

In a first example, FIG. 10 is a schematic diagram showing thedistribution of sub-pixels in a first second virtual quadrilateral(i.e., a first one of second virtual quadrilaterals) that is in theupper left corner of the pixel array shown in FIG. 4 . For example, asshown in FIG. 10 , only the arrangement of the sub-pixels in one secondvirtual quadrilaterals 100 is illustrated. As shown in FIGS. 4 and 10 ,each second virtual quadrilateral 100 includes four first virtualquadrilaterals 10, adjacently disposed first virtual quadrilaterals 10have a common side, and adjacently disposed second virtualquadrilaterals 100 have a common side. Each first virtual quadrilateral10 is formed by lines sequentially connecting centers of two redsub-pixels 01 and two blue sub-pixels 03 which are arranged in an array,i.e., four vertex angles of each first virtual quadrilateral 10 arerespectively provided with two red sub-pixels 01 and two blue sub-pixels03. For example, the two red sub-pixels 01 are arranged at two oppositevertex angles of a first virtual quadrilateral 10, the two bluesub-pixels 03 are arranged at the other two opposite vertex angles ofthe first virtual quadrilateral 10, and the center of the first virtualquadrilateral 10 is provided with one green sub-pixel 02. For thearrangement of the sub-pixels in a second virtual quadrilateral 100, redsub-pixels 01 are arranged at the center and four vertex angles of thesecond virtual quadrilateral 100, and one blue sub-pixel 03 is arrangedbetween two red sub-pixels 01 in each of the row direction and thecolumn direction.

As shown in FIG. 10 , the first corner of a blue sub-pixel 03 is rounded(i.e., circularly chamfered), and the second corner, the third cornerand the fourth corner thereof are all similar to right angles,respectively. For each second virtual quadrilateral 100, the two bluesub-pixels located in a same row are symmetrically arranged with respectto the column direction, and the two blue sub-pixels 03 located in asame column are symmetrically arranged with respect to the rowdirection. The first corners of the blue sub-pixels 03 in one of twoadjacent first pixel rows 1 are oriented in (or directed to) a samedirection, and the first corners of the blue sub-pixels 03 in the otherof the two adjacent first pixel rows 1 are oriented in (or directed to)opposite directions, respectively.

As shown in FIG. 10 , a first one, which is at the top left corner, ofthe first virtual quadrilaterals 10 has a pair of equal angles (each ofwhich is 92° as shown) and another angle of 90°, and each of theremaining first virtual quadrilaterals 10 has at least one angle of 90°and the vertex of the angle of 90° is located at the center of a redsub-pixel; and the blue sub-pixels 03 disposed diagonally around a redsub-pixel 01 are symmetric with respect to the center of the redsub-pixel 01.

As shown in FIG. 10 , if a line connecting centers of a red sub-pixel 01and a blue sub-pixel 03 adjacently disposed in a same column to eachother has a length of L, a second virtual quadrilateral 100 is a square(which is a substantial square here) with a side of 2L and a centerthereof is provided with a red sub-pixel 01, and the center of a greensub-pixel 02 in each first virtual quadrilateral 10 is located on aperpendicular bisector of a line connecting centers of a red sub-pixel01 and a blue sub-pixel 03 adjacently disposed in the row direction orthe column direction to each other. In addition, as shown in FIG. 10 ,vertical distances from the center of a green sub-pixel 02 to theboundaries of the light emitting areas of a red sub-pixel 01 and a bluesub-pixel 03 in each first virtual quadrilateral 10 are a and b,respectively, where a=b.

In a second example, FIG. 11 is a schematic diagram showing a pixelarray according to the second example of embodiments of the presentdisclosure. As shown in FIG. 11 , positions and shapes of sub-pixels inthis pixel array are the same as the positions and shapes of thesub-pixels in the pixel array according to the first example, exceptthat the first corners of some of the blue sub-pixels 03 are oriented(or directed) differently. In this pixel array, the orientations of thefirst corners of the blue sub-pixels 03 located in a same row are thesame, and the orientations of the first corners of the blue sub-pixels03 located in a same column are the same. For example, in FIG. 11 , thefirst corners of the blue sub-pixels 03 in the first row are directedupward, and the first corners of the blue sub-pixels 03 in the firstcolumn are directed to the left.

FIG. 12 is a schematic diagram showing the distribution of sub-pixels ina first second virtual quadrilateral (i.e., a first one of secondvirtual quadrilaterals) that is at the top left corner of the pixelarray shown in FIG. 11 . As shown in FIG. 12 , a first one, which is atthe top left corner, of the first virtual quadrilaterals 10 of a secondvirtual quadrilateral 100 has a pair of equal angles (each of which is92° as shown) and another angle of 90°, and each of the remaining firstvirtual quadrilaterals 10 has at least one angle of 90° whose vertex islocated at the center of a red sub-pixel; and the blue sub-pixels 03 attwo ends of a diagonal of a first virtual quadrilateral are disposedsymmetrically with respect to a line connecting the centers of the twored sub-pixels 01 of the first virtual sub-quadrilateral to each other.

As shown in FIG. 12 , if a line connecting the centers of a redsub-pixel 01 and a blue sub-pixel 03 adjacently disposed in a samecolumn to each other has a length of L, a second virtual quadrilateral100 is a square with a side of 2L and a center thereof is provided witha red sub-pixel 01, and the center of a green sub-pixel 02 in each firstvirtual quadrilateral 10 is located on a perpendicular bisector of aline connecting centers of a red sub-pixel 01 and a blue sub-pixel 03adjacently disposed in the row direction or the column direction to eachother. In addition, as shown in FIG. 12 , vertical distances from thecenter of the green sub-pixel 02 to the boundaries of the light emittingareas of a red sub-pixel 01 and a blue sub-pixel 03 in each firstvirtual quadrilateral 10 are a and b, respectively, where a=b.

In a third example, FIG. 13 is a schematic diagram showing a pixel arrayaccording to the third example of embodiments of the present disclosure.As shown in FIG. 13 , positions and shapes of the sub-pixels in thispixel array are the same as the positions and shapes of the sub-pixelsin the pixel array according to each of the foregoing two examples,except that the first corners of some of the blue sub-pixels 03 areoriented (or directed) differently. The first corners of all of the bluesub-pixels 03 in this pixel array are oriented in a same direction. Forexample, the first corners of all of the blue sub-pixels 03 in FIG. 13are directed to the left.

FIG. 14 is a schematic diagram showing the distribution of sub-pixels ina first second virtual quadrilateral (i.e., a first one of secondvirtual quadrilaterals) that is at the top left corner of the pixelarray shown in FIG. 13 . As shown in FIG. 14 , a first virtualquadrilateral 10, which is at the top left corner, of a second virtualquadrilateral 100 is an isosceles trapezoid, in which each of two anglesis 92°, and each of the other two angles is 88°.

As shown in FIG. 14 , if a line connecting centers of a red sub-pixel 01and a blue sub-pixel 03 adjacently disposed in a same column to eachother has a length of L, the second virtual quadrilateral 100 is asquare with a side of 2L and a center thereof is provided with a redsub-pixel 01, and the center of a green sub-pixel 02 in each firstvirtual quadrilateral 10 is located on a perpendicular bisector of aline connecting centers of a red sub-pixel 01 and a blue sub-pixel 03adjacently disposed in the row direction or the column direction to eachother. In addition, as shown in FIG. 14 , vertical distances from thecenter of the green sub-pixel 02 to the boundaries of the light emittingareas of a red sub-pixel 01 and a blue sub-pixel 03 in each firstvirtual quadrilateral 10 are a and b, respectively, where a=b.

In a fourth example, FIG. 15 is a schematic diagram showing a pixelarray according to the fourth example of embodiments of the presentdisclosure. As shown in FIG. 15 , positions and shapes of sub-pixels inthis pixel array are the same as the positions and shapes of thesub-pixels in the pixel array according to each of the foregoing threeexamples, except that the first corners of some of the blue sub-pixels03 are oriented (or directed) differently. In this pixel array, thefirst corners of the blue sub-pixels 03 positioned in a same row areoriented in a same direction, and the first corners of the bluesub-pixels 03 positioned in the first pixel rows 1 that are odd-numberedrows and the first corners of the blue sub-pixels 03 positioned in thefirst pixel rows 1 that are even-numbered rows are oriented in oppositedirections, respectively. For example, the first corners of the bluesub-pixels 03 in the first one of the first pixel rows 1 are alldirected to the right, while the first corners of the blue sub-pixels 03in the second one of the first pixel rows 1 are all directed to theleft.

FIG. 16 is a schematic diagram showing the distribution of sub-pixels ina first second virtual quadrilateral (i.e., a first one of secondvirtual quadrilaterals) that is at the top left corner of the pixelarray shown in FIG. 15 . As shown in FIG. 16 , a first virtualquadrilateral 10, which is at the upper left corner, of a second virtualquadrilateral 100 has a pair of opposite obtuse angles each of which is92° and another pair of opposite angles each of which is 88° formedtherein.

As shown in FIG. 16 , if a line connecting centers of a red sub-pixel 01and a blue sub-pixel 03 adjacently disposed in a same column to eachother has a length of L, each second virtual quadrilateral 100 is asquare with a side of 2L and a center thereof is provided with a redsub-pixel 01, and a center of the green sub-pixel 02 in each firstvirtual quadrilateral 10 is located on a perpendicular bisector of aline connecting centers of a red sub-pixel 01 and a blue sub-pixel 03adjacently disposed in the row direction or the column direction to eachother. In addition, as shown in FIG. 16 , vertical distances from thecenter of the green sub-pixel 02 to the boundaries of the light emittingareas of a red sub-pixel 01 and a blue sub-pixel 03 in each firstvirtual quadrilateral 10 are a and b, respectively, where a=b.

In a fifth example, FIG. 17 is a schematic diagram showing a pixel arrayof the fifth example of embodiments of the present disclosure. As shownin FIG. 17 , positions and shapes of sub-pixels in this pixel array arethe same as the positions and shapes of the sub-pixels in the pixelarray according to each of the foregoing four examples, except that thefirst corners of some of the blue sub-pixels 03 are orienteddifferently. In this pixel array, the first corners of the bluesub-pixels 03 located in a same row have a same orientation, and thefirst corners of the blue sub-pixels 03 located in a same column have asame orientation. For example, in FIG. 17 , the first corners of theblue sub-pixels 03 in the first row is directed downward, and the firstcorners of the blue sub-pixels 03 in the first column faces to the left.

FIG. 18 is a schematic diagram showing the distribution of sub-pixels ina first second virtual quadrilateral (i.e., a first one of secondvirtual quadrilaterals) that is at the top left corner of the pixelarray shown in FIG. 17 . As shown in FIG. 18 , a first virtualquadrilateral 10, which is in the upper left corner, of a second virtualquadrilateral 100 has a pair of equal opposite angles each of which is90° and another pair of opposite angles which are 92° and 88°,respectively.

As shown in FIG. 18 , if a line connecting centers of a red sub-pixel 01and a blue sub-pixel 03 adjacently disposed in a same column to eachother has a length of L, the second virtual quadrilateral 100 is asquare with a side of 2L and a center thereof is provided with a redsub-pixel 01, and a center of the green sub-pixel 02 in each firstvirtual quadrilateral 10 is located on a perpendicular bisector of aline connecting centers of a red sub-pixel 01 and a blue sub-pixel 03adjacently disposed in the row direction or the column direction to eachother. In addition, as shown in FIG. 18 , vertical distances from thecenter of the green sub-pixel 02 to the boundaries of the light emittingareas of a red sub-pixel 01 and a blue sub-pixel 03 in each firstvirtual quadrilateral 10 are a and b, respectively, where a=b.

It should be noted that, the foregoing examples do not limit anarrangement of the blue sub-pixels 03 according to the embodiments ofthe present disclosure. For example, a pixel array resulted fromrotating any one blue sub-pixel 03 around a midpoint of a lineconnecting the centers of two red sub-pixels 01 adjacent to the one bluesub-pixel 03 in the row direction by any angle, falls within theprotection scope of an embodiment of the present disclosure.

In some embodiments, only the first corner of each blue sub-pixel 03 iscircularly chamfered or rectilinearly chamfered, and is directed upward.In this case, a line connecting the vertexes of two opposite corners(the third corner and the fourth corner), which are in the rowdirection, of a red sub-pixel 01 and a blue sub-pixel 03 in a same rowis approximately on a same straight line. A line connecting the vertexesof the first and second corners of a red sub-pixel 01 and the secondcorner of a blue sub-pixel 03 in a same column together is approximatelyon a same straight line.

The foregoing first to fifth examples have been described by taking anexample in which the first corner of each blue sub-pixel 03 is rounded(i.e., circularly chamfered). In some embodiments, FIG. 19 is aschematic diagram showing a pixel array in which the first corner ofeach blue sub-pixel is rectilinearly chamfered, according to anembodiment of the present disclosure. As shown in FIG. 19 , positions,shapes and arrangement of sub-pixels in this pixel array are the same asthe positions, shapes, and arrangements of the sub-pixels in the pixelarray according to the fourth example. In this pixel array, the firstcorners of the blue sub-pixels 03 positioned in a same row are orientedin a same direction, and orientations of the first corners of the bluesub-pixels 03 positioned in the first pixel rows 1 that are odd-numberedrows are opposite to orientations of the first corners of the bluesub-pixels 03 positioned in the first pixel rows 1 that areeven-numbered rows. For example, the first corners of the bluesub-pixels 03 in the first one of the first pixel rows 1 are alldirected to the right, and the first corners of the blue sub-pixels 03in the second one of the first pixel rows 1 are all directed to theleft.

FIG. 20 is a schematic diagram showing the distribution of sub-pixels ina first second virtual quadrilateral (i.e., a first one of secondvirtual quadrilaterals) that is at the top left corner of the pixelarray shown in FIG. 19 . As shown in FIG. 20 , a first virtualquadrilateral 10, which is at the upper left corner, of a second virtualquadrilateral 100 has a pair of opposite obtuse angles each of which is91° and another pair of opposite angles each of which is 89°.

As shown in FIG. 20 , if a line connecting centers of a red sub-pixel 01and a blue sub-pixel 03 adjacently disposed in a same column has alength of L, a second virtual quadrilateral 100 is a square with a sideof 2L and a center thereof is provided with a red sub-pixel 01, and thecenter of the green sub-pixel 02 in each first virtual quadrilateral 10is located on a perpendicular bisector of a line connecting centers of ared sub-pixel 01 and a blue sub-pixel 03 adjacently disposed in the rowdirection or the column direction. In addition, as shown in FIG. 20 ,vertical distances from the center of the green sub-pixel 02 to theboundaries of the light emitting areas of a red sub-pixel 01 and a bluesub-pixel 03 in each first virtual quadrilateral 10 are a and b,respectively, where a=b.

In addition, in the above examples, the first corner of a blue sub-pixel03 is different from the other three corners of the blue sub-pixel 03,i.e., the distance from the vertex of the first corner of the bluesub-pixel 03 to the center of the blue sub-pixel is less than thedistance from the vertex of each of the other three corners to thecenter of a respective blue sub-pixel. In some embodiments, a shape ofthe first corner of at least one of a red sub-pixel 01 and a greensub-pixel 02 may be designed to have the same shape as the shape of eachblue sub-pixel 03. Description will be made below with reference tospecific examples.

FIG. 21 is a schematic diagram showing a pixel array in which the firstcorner of each red sub-pixel is circularly chamfered, according to anembodiment of the present disclosure. As shown in FIG. 21 , the firstcorner of each red sub-pixel 01 in the pixel array is directed to theright. Alternatively, the first corner of each red sub-pixel 01 may beorientated in an arbitrary direction by rotating the first corner ofeach red sub-pixel 01, so as to change the center of each red sub-pixel01. The red sub-pixels 01, after the first corners thereof are rotated,may be arranged in the same way as the way in which the blue sub-pixels03 are arranged as described above. FIG. 22 is a schematic diagramshowing the distribution of actual brightness centers of a pixel array,during displaying, with the first corner of each red sub-pixel beingrounded (i.e., circularly chamfered) and being similar to a right angle,according to an embodiment of the present disclosure. As shown in FIG.22 , as an example, the first corners of all of the red sub-pixels inthe pixel array may be directed to the right. For example, the dottedcorner at the first corner of each red sub-pixel 01 in FIG. 22represents that the first corner of each red sub-pixel 01 is similar toa right angle in a pixel array in the related art, symbols “X” representactual brightness centers when the pixel array in the related artdisplays, and symbols “ ” represent actual brightness centers of thepixel array according to the present embodiment when displaying. As canbe seen from FIG. 22 , when the first corners of the red sub-pixels arerounded, the distribution of the actual brightness centers thereof ismore uniform.

FIG. 23 is a schematic diagram showing a pixel array in which the firstcorner of each green sub-pixel is rectilinearly chamfered according toan embodiment of the present disclosure. As shown in FIG. 23, the firstcorners of four green sub-pixels 02 in each second virtual quadrilateral100 in the pixel array have orientations different from each other, andtwo green sub-pixels 02, which are in a same column, of the four greensub-pixels 02 are symmetric with respect to the row direction.Alternatively, the first corners of the green sub-pixels 02 may beoriented in an arbitrary direction by rotating the first corners of thegreen sub-pixels 02, so as to change the centers of the green sub-pixels02. The green sub-pixels 02, after the first corners thereof arerotated, may be arranged in the same way as the way in which the bluesub-pixels 03 are arranged as described above.

FIG. 24 is a schematic diagram showing a pixel array in which the firstcorner of each of red sub-pixels and blue sub-pixels is rectilinearly(or flatly) chamfered, according to an embodiment of the presentdisclosure. As shown in FIG. 24 , the first corners of the redsub-pixels 01 in a same row are oriented in a same direction, and thefirst corners of the blue sub-pixels 03 in a same row are oriented in asame direction. In a same row, the orientation of the first corners ofthe red sub-pixels 01 is opposite to the orientation of first corners ofthe blue sub-pixels. Alternatively, the first corner of each of a redsub-pixel 01 and a blue sub-pixel 03 may be oriented in any direction byrotating the first corner of each of the red sub-pixel 01 and the bluesub-pixel 03, so as to change the center of each of the red sub-pixel 01and the blue sub-pixel 03. The red sub-pixels 01 and the blue sub-pixels03, after the first corners thereof are rotated, may be arranged in thesame way as the way in which the blue sub-pixels 03 are arranged asdescribed above.

In a second aspect, an embodiment of the present disclosure provides adisplay device, which includes the pixel array according to any one ofthe foregoing embodiments of the present disclosure. The display devicemay be any product or component with a display function, such as amobile phone, a tablet computer, a television, a display, a notebookcomputer, a digital photo frame, a navigator, or the like.

It should be understood that the above embodiments are merely exemplaryembodiments adopted to explain the principles of the present disclosure,and the present disclosure is not limited thereto. It will be apparentto one of ordinary skill in the art that various modifications andimprovements may be made therein without departing from the spirit andscope of the present disclosure, and such modifications and improvementsalso fall within the scope of the present disclosure.

What is claimed is:
 1. A pixel array, comprising a plurality ofsub-pixels, which comprise first sub-pixels, second sub-pixels, andthird sub-pixels; the first sub-pixels and the third sub-pixels arealternately arranged along a row direction and form a plurality of firstpixel rows, the first sub-pixels and the third sub-pixels, which are ina same column, in the plurality of first pixel rows are alternatelyarranged, and the second sub-pixels are arranged side by side along therow direction and form a plurality of second pixel rows; linessequentially connecting centers of two of the first sub-pixels and twoof the third sub-pixels, which are arranged in an array, together form afirst virtual quadrilateral, and one of the second sub-pixels is in eachfirst virtual quadrilateral; wherein at least a portion of interiorangles of the first virtual quadrilateral is not equal to 90′; a firststraight line in the row direction or a second straight line in a columndirection, each of the first straight line and the second straight linepassing through a center of each sub-pixel of at least one sub-pixel ofthe plurality of sub-pixels, divides the sub-pixel into two parts havingareas different from each other.
 2. The pixel array according to claim1, wherein a ratio of the areas of the two parts having areas differentfrom each other ranges from 2:8 to 8:2 and is not equal to 1:1.
 3. Thepixel array according to claim 1, wherein a minimum distance from theintersection point of the extension lines of the two sides of the atleast one vertex angle of the at least one sub-pixel of the firstsub-pixels, the second sub-pixels and the third sub-pixels to a boundaryof the at least one sub-pixel is different from a minimum distance froman intersection point of extension lines of two sides of another vertexangle of the at least one sub-pixel to the boundary of the at least onesub-pixel.
 4. The pixel array according to claim 1, wherein the shape ofthe first sub-pixels comprises the polygon, and corners of each firstsub-pixel comprise a first corner and a second corner opposite to eachother and a third corner and a fourth corner opposite to each other; thesecond corner, the third corner and the fourth corner have asubstantially same shape, and a distance from an intersection point ofextension lines of two sides of the first corner of a first sub-pixel toa center of the first sub-pixel is greater than a distance from anintersection point of extension lines of two sides of the second cornerto the center of the first sub-pixel.
 5. The pixel array according toclaim 1, wherein the shape of the third sub-pixels comprises thepolygon, and corners of each third sub-pixel comprise a first corner anda second corner opposite to each other and a third corner and a fourthcorner opposite to each other; the second corner, the third corner andthe fourth corner have a substantially same shape, and a distance froman intersection point of extension lines of two sides of the firstcorner of a third sub-pixel to a center of the third sub-pixel isgreater than a distance from an intersection point of extension lines oftwo sides of the second corner of the third sub-pixel to the center ofthe third sub-pixel.
 6. The pixel array according to claim 1, whereinthe shape of the second sub-pixels comprises the polygon, and corners ofeach second sub-pixel comprise a first corner and a second corneropposite to each other and a third corner and a fourth corner oppositeto each other; the second corner, the third corner and the fourth cornerhave a substantially same shape, and a distance from an intersectionpoint of extension lines of two sides of the first corner of a secondsub-pixel to a center of the second sub-pixel is greater than a distancefrom an intersection point of extension lines of two sides of the secondcorner of the second sub-pixel to the center of the second sub-pixel. 7.The pixel array according to claim 4, wherein a ratio of a distancebetween an intersection point of extension lines of two sides of thefirst corner of a first sub-pixel and a vertex of the first corner ofthe first sub-pixel to a distance between the vertex of the first cornerof the first sub-pixel and a vertex of the second corner opposite to thefirst corner ranges from ⅕ to ½, and the vertex of the first corner ofthe first sub-pixel is a point, which has a minimum distance from anintersection point of extension lines of two sides of a correspondingvertex angle, at a boundary of the first sub-pixel.
 8. The pixel arrayaccording to claim 4, wherein the first corner is circularly chamferedor rectilinearly chamfered.
 9. The pixel array according to claim 4,wherein virtual vertex angles formed by intersections of extension linesof two sides of vertex angles corresponding to the second corner, thethird corner and the fourth corner, respectively, are substantiallyequal to each other.
 10. The pixel array according to claim 9, whereinthe virtual vertex angles formed by intersections of extension lines oftwo sides of vertex angles corresponding to the second corner, the thirdcorner and the fourth corner, respectively, range from about 80° toabout 100°.
 11. The pixel array according to claim 4, wherein an areasurrounded by extension lines of two sides of a vertex angle of thefirst corner and a contour of a boundary of the first corner is a firsthollowed-out area, and an area surrounded by extension lines of twosides of a vertex angle of the second corner and a contour of a boundaryof the second corner is a second hollowed-out area, and the firsthollowed-out area is greater than the second hollowed-out area in area.12. The pixel array according to claim 1, wherein minimum distances froma center of the second sub-pixel in each first virtual quadrilateral toboundaries of light emitting areas of two first sub-pixels directlyadjacent to the second sub-pixel are equal to each other; or wherein inthe sub-pixels corresponding to the first virtual quadrilateral, twofirst sub-pixels are symmetric with respect to a line connecting thecenters of two third sub-pixels, and the two third sub-pixels aresymmetric with respect to a line connecting the centers of the two firstsub-pixels; or wherein at least one of the interior angles of the firstvirtual quadrilateral ranges from 70° to 110°; or wherein a pair ofopposite interior angles of the first virtual quadrilateral comprisestwo interior angles each of which is 90°, and another pair of oppositeinterior angles of the first virtual quadrilateral comprises oneinterior angle greater than 90° and the other interior angle less than90°; or wherein a pair of opposite interior angles of the first virtualquadrilateral comprises two interior angles equal to each other, andanother pair of opposite interior angles of the first virtualquadrilateral comprises two interior angles, one of which is equal to90°; or wherein all of the interior angles of the first virtualquadrilateral are not equal to 90°, and some of the interior angles ofthe first virtual quadrilateral are equal to each other; or wherein thefirst virtual quadrilateral comprises a virtual parallelogram or avirtual trapezoid.
 13. The pixel array according to claim 1, whereinfour first virtual quadrilaterals arranged in an array form a secondvirtual polygon, the first sub-pixels and the third sub-pixels are atvertex angles or sides of the second virtual polygon, and arealternately distributed at the sides or the vertex angles of the secondvirtual polygon in a clockwise direction.
 14. The pixel array accordingto claim 13, wherein the second virtual polygon comprises a rectangle;or wherein in the second virtual polygon, centers of the thirdsub-pixels in a same row are substantially on a straight line parallelto the row direction, and/or centers of the third sub-pixels in a samecolumn are substantially on a straight line parallel to a columndirection; or wherein in the second virtual polygon, centers of thesecond sub-pixels in a same row are substantially on a straight lineparallel to the row direction, and/or centers of the second sub-pixelsin a same column are substantially on a straight line parallel to acolumn direction.
 15. The pixel array according to claim 1, wherein fora first sub-pixel and a third sub-pixel adjacent to each other in eachfirst pixel row, an extension line of a line connecting end pointsfarthest from respective centers thereof on a first side in a columndirection intersects an extension line of a line connecting end pointsfarthest from the respective centers thereof on a second side oppositeto the first side, with an angle less than therebetween; or wherein fora first sub-pixel and a third sub-pixel adjacent to each other in a samecolumn, an extension line of a line connecting end points farthest fromrespective centers thereof on a first side in the row directionintersects an extension line of a line connecting end points farthestfrom the respective centers thereof on a second side opposite to thefirst side, with an angle less than 30° therebetween.
 16. The pixelarray according to claim 1, wherein for a first sub-pixel and a thirdsub-pixel adjacent to each other in a same row, at least one corner ofthe first sub-pixel is opposite to at least one corner of the thirdsub-pixel, and an intersection point of extension lines of two sides ofthe at least one corner of the first sub-pixel and an intersection pointof extension lines of two sides of the at least one corner of the thirdsub-pixel are on a straight line parallel to the row direction; and/orfor a first sub-pixel and a third sub-pixel adjacent to each other in asame column, at least one corner of the first sub-pixel is opposite toat least one corner of the third sub-pixel, and an intersection point ofextension lines of two sides of the at least one corner of the firstsub-pixel and an intersection point of extension lines of two sides ofthe at least one corner of the third sub-pixel are on a straight lineparallel to a column direction.
 17. The pixel array according to claim1, wherein a straight line passing through a center of at least onesub-pixel of a first sub-pixel and a third sub-pixel along the rowdirection or a column direction divides the at least one sub-pixel intotwo parts, and a ratio of areas of the two parts ranges from 2:8 to 8:2;or wherein the first sub-pixels are red sub-pixels, the secondsub-pixels are green sub-pixels, and the third sub-pixels are bluesub-pixels.
 18. The pixel array according to claim 1, wherein each ofthe first sub-pixels is axisymmetric, the first sub-pixels have a sameshape, at least some of the first sub-pixels have symmetry axes that arenot in a same direction; or each of the second sub-pixels isaxisymmetric, the second sub-pixels have a same shape, at least some ofthe second sub-pixels have symmetry axes that are not in a samedirection; or each of the third sub-pixels is axisymmetric, the thirdsub-pixels have a same shape, at least some of the third sub-pixels havesymmetry axes that are not in a same direction.
 19. The pixel arrayaccording to claim 1, wherein each of the first sub-pixels and the thirdsub-pixels is axisymmetric, and at least some of the first sub-pixelsand the third sub-pixels have symmetry axes that are not in a samedirection; or wherein each of the second sub-pixels is non-axisymmetric;or wherein at least one of each first sub-pixel and each third sub-pixelhas a shape comprising only one symmetry axis; or wherein at least twoof a number of symmetry axes of a shape of each first sub-pixel, anumber of symmetry axes of a shape of each second sub-pixel, and anumber of symmetry axes of a shape of each third sub-pixel are differentfrom each other.
 20. A display device, comprising the pixel arrayaccording to claim 1.